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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.15
mikroSDK Library: 2.0.0.0
Category: LED segment
Downloaded: 155 times
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License: MIT license
7-segment LED display is the most commonly used type of display to represent changing numerical values. The principle is very simple - seven LED segments are positioned in a certain shape and by turning specific segments on or off, the shape that resembles a specific number is lit. This method of displaying numbers was first used in the beginning of the 20th century, but after the invention of the LED in ‘70, it is the most commonly used method to display numbers. It utilizes a fairly simple and cheap design with the numbers clearly visible.
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7-segment LED display is the most commonly used type of display to represent changing numerical values. The principle is very simple - seven LED segments are positioned in a certain shape and by turning specific segments on or off, the shape that resembles a specific number is lit. This method of displaying numbers was first used in the beginning of the 20th century, but after the invention of the LED in ‘70, it is the most commonly used method to display numbers. It utilizes a fairly simple and cheap design with the numbers clearly visible.
We provide a library for the UT-S7-SEGR Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
This library contains API for UT-S7-SEGR Click driver.
uts7segr_cfg_setup
Config Object Initialization function.
void uts7segr_cfg_setup ( uts7segr_cfg_t *cfg );
uts7segr_init
Initialization function.
UTS7SEGR_RETVAL uts7segr_init ( uts7segr_t *ctx, uts7segr_cfg_t *cfg );
uts7segr_default_cfg
Click Default Configuration function.
void uts7segr_default_cfg ( uts7segr_t *ctx );
uts7segr_generic_write
This function writes a desired number of data bytes starting from the selected register by using SPI serial interface.
err_t uts7segr_generic_write ( uts7segr_t *ctx, uint8_t *data_in );
uts7segr_display_state
This function display state.
void uts7segr_display_state ( uts7segr_t *ctx, uint8_t state );
uts7segr_display_number
This function displays number on dispaly matrix.
err_t uts7segr_display_number ( uts7segr_t *ctx, uint8_t number, uint8_t dot_pos );
The demo application shows basic usage of the UT 7 SEG display.
The demo application is composed of two sections :
Configuring clicks and log objects. Settings the Click in the default configuration.
void application_init ( void ) {
log_cfg_t log_cfg; /**< Logger config object. */
uts7segr_cfg_t uts7segr_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
Delay_ms ( 100 );
log_info( &logger, " Application Init " );
// Click initialization.
uts7segr_cfg_setup( &uts7segr_cfg );
UTS7SEGR_MAP_MIKROBUS( uts7segr_cfg, MIKROBUS_1 );
err_t init_flag = uts7segr_init( &uts7segr, &uts7segr_cfg );
if ( init_flag == SPI_MASTER_ERROR ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
uts7segr_default_cfg ( &uts7segr );
log_info( &logger, " Application Task " );
}
Draws numbers from 0 to 99 on the screen.
void application_task ( void ) {
log_info( &logger, "---- Number counter ----" );
for ( uint8_t cnt = 0; cnt < 100; cnt++ ) {
uts7segr_display_number( &uts7segr, cnt, UTS7SEGR_DOT_LEFT );
Delay_ms ( 500 );
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
Other Mikroe Libraries used in the example:
Additional notes and informations
Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.